Hair-cutting device



" and Figs. 3 and 4.-

slot 27, the rear end of Patented Aug. 28, 1928.

UNITED STATES PAUL KVIST, F SEATTLE, XVASHINGTO N HAIR-CUTTING nnvrcnlApplication filed 0ctober7, 1926. Serial No. 139,994.

The object out my invention is to provide an improved device for cuttingthe human hair; which device is so constructed ant arranged thatpressure appliedthereto by the operators hand will impart vibratorycutting movement to the bladeelement of the device. r

The invention consists in the novel construction, adaptation andcombination of parts hereinafter described and claimed.

In the accompanying drawing,+ I v Figure 1 is a side elevation of a haircutter illustrating one embodiment of my invention; Fig. 2 is a top edgeview thereof; are detail sectional views on lines 33 and 4 l of Fig. 1.Fig. 5 is a side-elevation of a hair cutter illustrating anotherembodiment of my invention; Fig. 6 is a top edge view thereof; Fig. 7 1sa view similar to Fig. '6 with the parts shown in relatively openpositions; and Figs. 8, 9, and are detail sectional views on lines 8-8,9-9 and l0-1Ofo:tF1g. 5. Fig. 11 is aside elevation illustrating acasing in which the cutters may be sheathed when not in use.

The cutter shown in Figs. 1 to 4 inclusive, is constructed of a thin barof steel to provide at one end thereof a blade element and at its otherend a handle element 21.

The blades upper edge 22 which constitutes the cutting edge of thedevice is sharp ened and is inclined with respect to the longitudinalaxis of the device. The cutting edge 22 extends from the outer extremityof the blade to an opening 23 which is coextensive with an arcuate slot24 which separates the rear portion of the blade from the handle. 25represents a slot extending length-wise of the bar below the blade andextending from in proximity of: the outer end of the latter in a curve,as shown in.

Fig. 1, to below the bot-tom of theslot into the handle 21 and thenceupwardly in a curve as at 26 to the rear of the slot 24:.

Extending rearwardly from the slot 26 medially of the width of thehandleand to within proximity of its rear extremity 1s a this slot 27extending upwardly as at 28. As shown in Fig. 3, the slot 27 is formedto provide in transverse section a tapering upper edge 28 of the portion21 of the handle below the slot 27 and a reentrant groove 29 in thelower edge of the portion 21 of the handle above the groove.Theprovision of the slots 24, 25, and 26, affords curved ribs 30 and 31which serve as springs to resiliently connect the blade 20 from itsfront and rear end, respectively, with the front end of the handle.Moreover, the rib 31 connects the lower rear end of the blade with theupper portion 21 ot the handle and the rib 30 connects the front end ofthe blade with the lower portion 21 of the handle; hence, by moving theforward ends of the'upper andlower portions otthe handle toward and fromeach other, a Vertical vibratory moven'ient, is transmitted through thesaid ribs to the cutter blade.

The pressureto contract the forward end of the handle parts toward eachother is accomplished by means of the operators hand which iolds thedevice; his other hand hein employed to hold a comb, as denotedbydottedlines 33 in Fig. 1, by which the hair is-brought upinto cuttingrelation with resaectto the cutting blade of the device, said combcooperating with. the device by providing back support for the hairagainst which the blade engages in its vibratory cutting action.

The other illustrated form of the invention is shown in Figs. 6 to 10inclusive,

comprises a cutting blade 35 with anin-' clined cutting edge 86 andhaving a rearwardly directed stem 87 which is mounted for movementbetween the lower and upper elements 38 and 38 of a. handle.

The rear end oi the blade stem is connected to one of the handleelements as by means of a resilient rib or spring 39. The rear ends ofsaid handleelements are connected together by means of a resilient ribor spring 38 The lower handle-element 38 extends below the blade 35 andis formed with a groove 40 which serves as a guide way for the blade.

In proximity to the blade, the upper ele- I ment 38 0f thehandle isbifurcated to provide a slot 41 (Fig. 6) to receive and guide the stem,and at each side of the slot, the branches at opposite sides of the stembeing extended downwardly in the form or" ears 42 whose lowerextremities are welded to the lower element 38 or engaged withingrooves, such as 43 provided in such handle element. The cars 42 serveas side guides for the blade and its stem, and guides supplementary,thereto into the nature of, lugs 44 are provided upon the handle nearthe spring 39 to obviate lateral displacement of the rear end of thestem with respect to the handle. 45 represents a relatively thinextension of the blade-stein which is found to be advantageous forregulating the vibratory iii'iovement of the stem.

46 are recesses provided in each side of the respective handle elementsto accommodate the thumb and a finger of the operators hand whereby thestem. is pushed in opposite lateral directions to accomplish bowingmovements of the stem between the ears i2 and the lug 4A: whereby theeffective length ot the stem is varied to impart reciprocatory movementto the blade longitucinally ot the device. In use acomb as denoted bydotted lines 47 in Fig. 6 is utilized to hold the hair while being cutwith shearing Sll'Gh-TBS ot the blade when the latteris actuated bythumb and finger pressure applied to the stem 37 as above described. Thedevice in either of its forms (F 1 and is advantageously constructed ofa single piece of steel which is treated or prepared to providesufficient resiliency to afford the vibratory movement of the blade.

In practice, the parts 30 and 31 of the Fig. 1 species and the part 39of the Fig. 6 species constitutes springs through the action of whichthe vibratory movement of the respective blades are attained.

In Fig. 11 I show in elevation a casing 50 which issewed as at 51 aboutits margin as by thread, and is provided in one or both sides withapertures such as 52 opening into a pocket or pockets in which one ormore of the devices may be sheathed.

The construction and manner of using the invention will, it is thought,be understood from the foregoing description.

lVl at I claim is v 1. A hair cutting device comprising a contractilehandle, a blade disposed in the plane of the handle, and spring elementsconnecting both ends of the blade with one end of the handle.

2. A hair cutting device comprising a handle having upper and lowerelements connected together at one end of the handle, a blade disposedin the plane of the handle, and spring devices connecting the oppositeends of the blade with the upper and lower elements respectively of saidhandle.

3. A hair cutting device consisting of a handle formed of twosubstantially parallel portions connected together at one end of thehandle, a blade, and resilient connection between the handle and theblade, said resilient connection permitting vibratory movement of theblade with respect to the handle and in the plane of the latter.

4:. A. hair cutting device formed of a single piece of resilientmaterial, comprising a cutting blade at one end and a handle at theopposite end, the handle and blade end of the device having recesses cuttherein, whereby upon pressure being applied to opposite sides of thehandle theblade will be vibrated.

Signed at Seattle, Washington, this 2nd day of October 1926. r

, PAUL KVIST.

